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Commit dc10dc55 authored by Ian Matyssik's avatar Ian Matyssik Committed by Franco Fichtner
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Cleanup of PF rule generation and fix for missing rules for group interface network 

(cherry picked from commit 669efa5f)
(cherry picked from commit cccec5ab)
(cherry picked from commit a203c699)
(cherry picked from commit c37e82a9)
(cherry picked from commit 25eeb7c9)
(cherry picked from commit e839ef2c)
(cherry picked from commit 587e6573)
(cherry picked from commit 7f76c06c)
(cherry picked from commit 00dfec8a)
parent e08e21ce
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Showing with 21 additions and 223 deletions
src/etc/inc/filter.inc
View file @ dc10dc55
......@@ -395,7 +395,6 @@ function filter_configure_sync($verbose = false)
/* generate aliases */
update_filter_reload_status(gettext("Creating aliases"));
$aliases = filter_generate_aliases($FilterIflist);
$aliases .= filter_generate_network_aliases();
$gateways = filter_generate_gateways();
if ($verbose) {
......@@ -879,35 +878,6 @@ function filter_generate_aliases(&$FilterIflist)
return $aliases;
}
/**
* generate aliases for internal networks, so eventually we don't need logic in the rule parsing to bind the
* existing network/ip options.
*/
function filter_generate_network_aliases()
{
global $config;
$result = "### define internal aliases\n";
$interface_config = legacy_interfaces_details();
foreach (legacy_config_get_interfaces(array("enable" => true)) as $if => $ifdetail) {
$networks = array();
$addresses = array();
if (!empty($ifdetail['if']) && !empty($interface_config[$ifdetail['if']])) {
$properties = $interface_config[$ifdetail['if']];
if (!empty($properties['ipv4'])) {
$networks[] = gen_subnet($properties['ipv4'][0]['ipaddr'], $properties['ipv4'][0]['subnetbits']);
$addresses[] = $properties['ipv4'][0]['ipaddr'];
}
if (!empty($properties['ipv6']) && empty($properties['ipv6'][0]['link-local'])) {
$networks[] = gen_subnetv6($properties['ipv6'][0]['ipaddr'], $properties['ipv6'][0]['subnetbits']);
$addresses[] = $properties['ipv6'][0]['ipaddr'];
}
}
$result .= "table <internal-{$if}> { " . implode(' ', $networks) . " } \n";
$result .= "table <internal-{$if}ip> { " . implode(' ', $addresses) . " } \n";
}
return $result;
}
function filter_generate_gateways()
{
global $config, $GatewaysList;
......@@ -2027,26 +1997,9 @@ function filter_generate_port(& $rule, $target = "source", $isnat = false) {
}
if (isset($rule['protocol']) && in_array($rule['protocol'], array("tcp","udp","tcp/udp"))) {
if (!empty($rule[$target]['port'])) {
$srcport = explode("-", $rule[$target]['port']);
$srcporta = alias_expand($srcport[0]);
if (!$srcporta) {
log_error(sprintf('filter_generate_port: %s is not a valid %s port.', $srcport[0], $target));
} elseif (empty($srcport[1]) || $srcport[0] == $srcport[1]) {
$src .= " port {$srcporta} ";
} elseif (($srcport[0] == 1) && ($srcport[1] == 65535)) {
/* no need for a port statement here */
} elseif ($isnat) {
$src .= " port {$srcport[0]}:{$srcport[1]}";
} else {
if (is_port($srcporta) && $srcport[1] == 65535) {
$src .= " port >= {$srcporta} ";
} elseif ($srcport[0] == 1) {
$src .= " port <= {$srcport[1]} ";
} else {
$srcport[0]--;
$srcport[1]++;
$src .= " port {$srcport[0]} >< {$srcport[1]} ";
}
$port = alias_expand(str_replace('-', ':', $rule[$target]['port']));
if (!empty($port)) {
$src = " port " . $port;
}
}
}
......@@ -2054,42 +2007,6 @@ function filter_generate_port(& $rule, $target = "source", $isnat = false) {
return $src;
}
function filter_address_add_vips_subnets(&$FilterIflist, &$subnets, $if, $not)
{
$if_subnets = array($subnets);
if ($not == true) {
$subnets = "!{$subnets}";
}
if (!empty($FilterIflist[$if]['vips']) || !empty($FilterIflist[$if]['vips6'])) {
$all_vips = array();
$all_vips = array_merge($all_vips, !empty($FilterIflist[$if]['vips']) ? $FilterIflist[$if]['vips'] : array());
$all_vips = array_merge($all_vips, !empty($FilterIflist[$if]['vips6']) ? $FilterIflist[$if]['vips6'] : array());
foreach ($all_vips as $vip) {
foreach ($if_subnets as $subnet) {
if (ip_in_subnet($vip['ip'], $subnet)) {
continue 2;
}
}
$network = null;
if (is_ipaddrv4($vip['ip']) && is_subnetv4($if_subnets[0])) {
$network = gen_subnet($vip['ip'], $vip['sn']);
} elseif (is_ipaddrv6($vip['ip']) && is_subnetv6($if_subnets[0])) {
$network = gen_subnetv6($vip['ip'], $vip['sn']);
}
if (!empty($network)) {
$subnets .= ' ' . ($not == true ? '!' : '') . $network . '/' . $vip['sn'];
$if_subnets[] = $network . '/' . $vip['sn'];
}
}
if (strpos($subnets, ' ') !== false) {
$subnets = "{ {$subnets} }";
}
}
}
function filter_generate_address(&$FilterIflist, &$rule, $target = 'source', $isnat = false)
{
global $config;
......@@ -2099,131 +2016,26 @@ function filter_generate_address(&$FilterIflist, &$rule, $target = 'source', $is
if (isset($rule[$target]['any'])) {
$src = "any";
} elseif (!empty($rule[$target]['network'])) {
if (strstr($rule[$target]['network'], "opt")) {
$optmatch = "";
$network_name = $rule[$target]['network'];
$matches = "";
if ($rule['ipprotocol'] == "inet6") {
if (preg_match("/opt([0-9]*)$/", $rule[$target]['network'], $optmatch)) {
$opt_ip = $FilterIflist["opt{$optmatch[1]}"]['ipv6'];
if (!is_ipaddrv6($opt_ip)) {
return "";
}
$src = $opt_ip . "/" . $FilterIflist["opt{$optmatch[1]}"]['snv6'];
/* check for opt$NUMip here */
} elseif (preg_match("/opt([0-9]*)ip/", $rule[$target]['network'], $matches)) {
$src = $FilterIflist["opt{$matches[1]}"]['ipv6'];
if (!is_ipaddrv6($src)) {
return "";
}
if (isset($rule[$target]['not'])) {
$src = " !{$src}";
}
}
} else {
if (preg_match("/opt([0-9]*)$/", $rule[$target]['network'], $optmatch)) {
$opt_ip = $FilterIflist["opt{$optmatch[1]}"]['ip'];
if (!is_ipaddrv4($opt_ip)) {
return "";
}
$src = $opt_ip . "/" . $FilterIflist["opt{$optmatch[1]}"]['sn'];
/* check for opt$NUMip here */
} elseif (preg_match("/opt([0-9]*)ip/", $rule[$target]['network'], $matches)) {
$src = $FilterIflist["opt{$matches[1]}"]['ip'];
if (!is_ipaddrv4($src)) {
return "";
}
if (isset($rule[$target]['not'])) {
$src = " !{$src}";
}
}
}
} else {
if ($rule['ipprotocol'] == "inet6") {
switch ($rule[$target]['network']) {
case 'wan':
$wansa = $FilterIflist['wan']['sav6'];
if (!is_ipaddrv6($wansa)) {
return "";
}
$wansn = $FilterIflist['wan']['snv6'];
$src = "{$wansa}/{$wansn}";
break;
case 'wanip':
$src = $FilterIflist["wan"]['ipv6'];
if (!is_ipaddrv6($src)) {
return "";
}
break;
case 'lanip':
$src = $FilterIflist["lan"]['ipv6'];
if (!is_ipaddrv6($src)) {
return "";
}
break;
case 'lan':
$lansa = $FilterIflist['lan']['sav6'];
if (!is_ipaddrv6($lansa)) {
return "";
}
$lansn = $FilterIflist['lan']['snv6'];
$src = "{$lansa}/{$lansn}";
break;
case '(self)':
if ($network_name == '(self)') {
$src = "(self)";
break;
default:
if (!empty($FilterIflist[$rule[$target]['network']]['sav6'])) {
$src = $FilterIflist[$rule[$target]['network']]['sav6'] . "/" . $FilterIflist[$rule[$target]['network']]['snv6'];
} else {
return "";
}
}
if (isset($rule[$target]['not']) && !is_subnet($src)) {
$src = " !{$src}";
}
} else {
switch ($rule[$target]['network']) {
case 'wan':
$wansa = $FilterIflist['wan']['sa'];
if (!is_ipaddrv4($wansa)) {
return "";
}
$wansn = $FilterIflist['wan']['sn'];
$src = "{$wansa}/{$wansn}";
break;
case 'wanip':
$src = $FilterIflist["wan"]['ip'];
break;
case 'lanip':
$src = $FilterIflist["lan"]['ip'];
break;
case 'lan':
$lansa = $FilterIflist['lan']['sa'];
if (!is_ipaddrv4($lansa)) {
return "";
} elseif (preg_match("/^(wan|lan|opt[0-9]+)ip$/", $network_name, $matches)) {
if (empty($FilterIflist[$matches[1]]['if'])) {
// interface non-existent or in-active
return null;
}
$lansn = $FilterIflist['lan']['sn'];
$src = "{$lansa}/{$lansn}";
break;
case '(self)':
$src = "(self)";
break;
default:
if (!empty($FilterIflist[$rule[$target]['network']]['sa'])) {
$src = $FilterIflist[$rule[$target]['network']]['sa'] . "/" . $FilterIflist[$rule[$target]['network']]['sn'];
$src = "({$FilterIflist["{$matches[1]}"]['if']})";
} else {
return "";
if (empty($FilterIflist[$network_name]['if'])) {
// interface non-existent or in-active
return null;
}
$src = "({$FilterIflist[$network_name]['if']}:network)";
}
if (isset($rule[$target]['not']) && !is_subnet($src) &&
(strpos($src, '{') === false)) {
if (isset($rule[$target]['not'])) {
$src = " !{$src}";
}
}
}
if (is_subnet($src)) {
filter_address_add_vips_subnets($FilterIflist, $src, $rule[$target]['network'], isset($rule[$target]['not']));
}
} elseif ($rule[$target]['address']) {
$expsrc = alias_expand($rule[$target]['address']);
if (isset($rule[$target]['not'])) {
......@@ -2626,27 +2438,13 @@ function filter_rules_generate(&$FilterIflist)
$gw = get_interface_gateway($ifdescr);
if (is_ipaddrv4($gw) && isset($ifcfg['ip']) && is_ipaddrv4($ifcfg['ip'])) {
$ipfrules .= "pass out {$log['pass']} route-to ( {$ifcfg['if']} {$gw} ) from {$ifcfg['ip']} to !{$ifcfg['sa']}/{$ifcfg['sn']} keep state allow-opts label \"let out anything from firewall host itself\"\n";
if (isset($ifcfg['vips']) && is_array($ifcfg['vips'])) {
foreach ($ifcfg['vips'] as $vip) {
if (ip_in_subnet($vip['ip'], "{$ifcfg['sa']}/{$ifcfg['sn']}")) {
$ipfrules .= "pass out {$log['pass']} route-to ( {$ifcfg['if']} {$gw} ) from {$vip['ip']} to !{$ifcfg['sa']}/{$ifcfg['sn']} keep state allow-opts label \"let out anything from firewall host itself\"\n";
} else {
$ipfrules .= "pass out {$log['pass']} route-to ( {$ifcfg['if']} {$gw} ) from {$vip['ip']} to !" . gen_subnet($vip['ip'], $vip['sn']) . "/{$vip['sn']} keep state allow-opts label \"let out anything from firewall host itself\"\n";
}
}
}
$ipfrules .= "pass out {$log['pass']} route-to ( {$ifcfg['if']} {$gw} ) from ({$ifcfg['if']}) to !({$ifcfg['if']}:network) keep state allow-opts label \"let out anything from firewall host itself\"\n";
}
$gwv6 = get_interface_gateway_v6($ifdescr);
$stf = get_real_interface($ifdescr, "inet6");
$pdlen = 64 - calculate_ipv6_delegation_length($ifdescr);
if (is_ipaddrv6($gwv6) && is_ipaddrv6($ifcfg['ipv6'])) {
$ipfrules .= "pass out {$log['pass']} route-to ( {$stf} {$gwv6} ) inet6 from {$ifcfg['ipv6']} to !{$ifcfg['ipv6']}/{$pdlen} keep state allow-opts label \"let out anything from firewall host itself\"\n";
if (is_array($ifcfg['vips6'])) {
foreach ($ifcfg['vips6'] as $vip)
$ipfrules .= "pass out {$log['pass']} route-to ( {$stf} {$gwv6} ) inet6 from {$vip['ip']} to !{$vip['ip']}/{$pdlen} keep state allow-opts label \"let out anything from firewall host itself\"\n";
}
$ipfrules .= "pass out {$log['pass']} route-to ( {$stf} {$gwv6} ) inet6 from ({$stf}) to !({$stf}:network) keep state allow-opts label \"let out anything from firewall host itself\"\n";
}
}
......
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